convert byte [] to picture.image

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C#

how to Convert byte[] to picterw.image for show pic or image to picurebox

Posted 9-Apr-11 18:44pm

saeed1364

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saeed1364 10-Apr-11 1:03am

byte[] pic=pic1.picbox(dataGridView1.CurrentRow.Cells[1].Value.ToString());picure.image=???;
class is......
public Byte[] picbox(string p) { // byte[] binaryData = null; byte[] binaryData =new byte[0]; connection.Open(); command.CommandText = "select * From adduser where (bakernum=@bakernum)"; command.Parameters.AddWithValue("@bakernum", p); SqlDataReader reader = command.ExecuteReader(); reader.Read(); if (reader.HasRows) binaryData = (byte[])reader.GetValue(14); return binaryData ; }

4 solutions

Solution 1

C#

byte[] buffer= byte Array here;
  MemoryStream ms = new MemoryStream(buffer);
  Bitmap bmp=new Bitmap(ms);

This bitmap can be assign to the image property of the picture box. Make sure the bytes includes the image headers as well

dispose the streams after use.

Posted 9-Apr-11 18:51pm

Albin Abel

Updated 9-Apr-11 18:52pm

v2

Comments

saeed1364 10-Apr-11 1:01am

No. is wrong solution
i want show pic or image to picurebox.
""""""""""""
byte[] pic=pic1.picbox(dataGridView1.CurrentRow.Cells[1].Value.ToString());

class is......
public Byte[] picbox(string p)
{
// byte[] binaryData = null;
byte[] binaryData =new byte[0];
connection.Open();
command.CommandText = "select * From adduser where (bakernum=@bakernum)";
command.Parameters.AddWithValue("@bakernum", p);
SqlDataReader reader = command.ExecuteReader();
reader.Read();

if (reader.HasRows)
binaryData = (byte[])reader.GetValue(14);

return binaryData ;
}

Espen Harlinn 10-Apr-11 17:22pm

Good effort, my 5 :)

Dalek Dave 10-Apr-11 19:05pm

Good Answer

Solution 4

When you read images from a db, you usually need a way to put them there in the first place, so just for completeness:
Use something like this to get byte[] from System.Drawing.Image

public static byte[] ConvertImageToBytes(System.Drawing.Image imageToConvert,
ImageFormat formatOfImage) 
 { 
 byte[] result; 
 try 
 { 
  using (MemoryStream ms = new MemoryStream()) 
  { 
   imageToConvert.Save(ms,formatOfImage); 
   result = ms.ToArray(); 
  } 
 } 
 catch (Exception) { /* do something useful like logging the exception */ throw;} 
 return result; 
}

To convert a byte[] to a System.Drawing.Image you can use something like (as shown by d@nish, RaviRanjankr and Albin Abel ):

public static System.Drawing.Image ConvertBytesToImage(byte[] buffer)
{
 System.Drawing.Image result; 

 using (MemoryStream ms = new MemoryStream(buffer,0,buffer.Length)) 
 { 
  ms.Write(myByteArray,0,myByteArray.Length); 
  result = Image.FromStream(ms,true); 
 }
 return result;
}

Regards
Espen Harlinn

Posted 10-Apr-11 11:21am

Espen Harlinn

Comments

Sergey Alexandrovich Kryukov 11-Apr-11 0:08am

Sure, a 5.
--SA

Espen Harlinn 11-Apr-11 15:11pm

Thanks SAKryukov!

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RaviRanjanKr · Accepted Answer · 2011-04-09T19:05:00

Solution 2

Try this

C#

public static Bitmap BytesToBitmap(byte[] byteArray)
{
using (MemoryStream ms = new MemoryStream(byteArray))
{
Bitmap img = (Bitmap)Image.FromStream(ms);
return img;
}
}

Posted 9-Apr-11 19:05pm

RaviRanjanKr

Comments

Espen Harlinn 10-Apr-11 17:23pm

Good effort - nice compact implementation using using - good stuff, my 5 :)

Dalek Dave 10-Apr-11 19:05pm

Good Call

Sergey Alexandrovich Kryukov 11-Apr-11 0:08am

That certainly works, my 5
--SA

*dan!sh* · Accepted Answer · 2011-04-09T20:24:00

Solution 3

Once you have recieved the MemoryStream, you can create a image obect out of it using following:

MemoryStream memStream = new MemoryStream(imageBytes);
yourPictureBox.Image = Image.FromStream(memStream);

Posted 9-Apr-11 20:24pm

dan!sh

Comments

saeed1364 10-Apr-11 8:38am

thank you my friend .ok solution very good solution

Albin Abel 10-Apr-11 10:48am

Saeed My answer also the same. Is that mean you can't understand the code?

saeed1364 12-Apr-11 0:09am

You just answered, but not perfect. Thank you from the time did you spend
error ms

Albin Abel 12-Apr-11 6:39am

I didn't get you

Espen Harlinn 10-Apr-11 17:25pm

Good effort, my 5 :)

Sergey Alexandrovich Kryukov 11-Apr-11 0:09am

Same thing, a correct one. My 5.
--SA